Year-End Tax Planning: Strategies to Lower Your Tax Bill Before December 31
As the year winds down, a few deliberate moves can legally shrink your tax bill — and make filing season far smoother. Run the calculations before December 31 and you’ll organize income and deductions while keeping more of your money. (Contribution limits and thresholds change annually; the figures below are illustrative — confirm the current amounts.)
Adjustments to Your Income
The most common way to lower taxable income is to fund pre-tax accounts: max (or add to) your 401(k) or employer plan, a Traditional IRA, or a Health Savings Account if you have a qualifying high-deductible health plan. Every dollar contributed reduces your income by that amount — you don’t have to hit the maximum to benefit.
Tax-Loss Harvesting
In a year when markets have dipped, you can harvest losses: sell a losing position and replace it with a similar (not identical) holding to keep your market exposure. If you rebuy the exact same security, wait at least 30 days to avoid the IRS wash-sale rule. Harvested losses offset realized gains, then up to $3,000 of ordinary income — and any excess carries forward to future years.
Tax-Gain Harvesting
The flip side: if you already hold realized losses, you can realize gains tax-free up to the amount of those losses. Sell the appreciated holding, offset the gain with your losses, and — if you still want it — rebuy immediately (no 30-day wait applies to gains). You reset to a higher cost basis, which can lower future taxes.
Itemize or Not — Consider Bunching
After the income adjustments above, compare the standard deduction with your potential itemized deductions and take whichever is higher. Most people take the standard. But if you make large charitable gifts or have high medical bills, itemizing may win — and bunching several years of donations into one year can push you above the standard deduction in that year. Run the numbers first.
If You Run a Small Business
Flow-through entities — LLCs, partnerships, sole proprietorships — offer wide expense deductions: office or home-office costs, business travel and meals, vehicle expenses, employee benefits, retirement plans, insurance, utilities, and licenses. Track them carefully; a forgotten expense is just extra tax. On top of that, many owners can take the 20% qualified business income deduction on net profit.
Don’t Overlook Tax Credits
Credits reduce tax dollar-for-dollar — far more valuable than deductions. Common ones include the Child Tax Credit, the Child & Dependent Care Credit, the Retirement Saver’s Credit (for lower-to-moderate incomes), education credits for tuition, and residential energy / EV credits for qualifying improvements and vehicles. Because these change periodically, a year with planned home upgrades or an EV purchase can be a particularly tax-smart one.
The bottom line: year-end tax planning is a straightforward way to keep more of what you earn. Consider these strategies before December 31 — and confirm the specifics for your situation with a professional.
Beat the December 31 deadline. A quick year-end review can turn these strategies into concrete moves before the window closes. Educational information only — not tax advice.
